This question requires framing criminal charges and then delivering a judgment based on the provided prosecution case, defence plea, evidence, and arguments.

I. Charges to be Framed:

Based on the prosecution's allegations, the following charges should be framed against the accused:

1. Under Section 504 of the Indian Penal Code (IPC): For intentionally insulting the complainant with intent to provoke a breach of the peace, by abusing him after the complainant refused to give his bicycle.
2. Under Section 323 of the Indian Penal Code (IPC): For voluntarily causing simple hurt to the complainant by beating him with a lathi, resulting in 8 contusions on his body.
3. Under Section 324 of the Indian Penal Code (IPC): For voluntarily causing simple hurt to the complainant by means of a lathi, which is an instrument for shooting, stabbing or cutting, or any instrument which, used as a weapon of offence, is likely to cause death or grievous hurt (a lathi, when used to beat, falls under this category).

II. Judgment:

A. Brief Facts of the Prosecution Case:

On April 11, 2008, at approximately 11:55 p.m., while the complainant was fetching water from a public tap, the accused demanded his bicycle. Upon the complainant's refusal, the accused began to abuse him. Despite the complainant's request to stop, the accused retrieved a lathi. The complainant retreated into his house, but the accused followed him, brought him out, and assaulted him with the lathi, causing the complainant to fall and sustain various injuries, including 8 contusions. The incident was witnessed by Lala Shrivastav, Kundan Singh, and Manju. An FIR was lodged shortly thereafter, and the complainant underwent a medical examination.

B. Defence Plea:

The defence contended that there was no prior enmity between the parties. It was argued that the injuries on the complainant were old and not sustained during the alleged incident, possibly caused by a fall. The defence also claimed there were no eye-witnesses as the incident occurred in the dark midnight and incorrectly stated that no offense under Section 327 IPC (which pertains to theft) was made out. The accused, in his statement under Section 313 Cr.P.C., denied the recovery of the lathi and asserted that he committed no offense, reiterating that the injuries were old.

C. Points for Determination:

1. Whether the accused intentionally insulted the complainant with intent to provoke a breach of the peace.
2. Whether the accused voluntarily caused simple hurt to the complainant.
3. Whether such hurt was caused by means of a dangerous weapon (lathi).

D. Appreciation of Evidence and Findings:

1. Testimony of Complainant (P.W.-1): The complainant provided a direct and consistent account of the incident, detailing the accused's demand for the bicycle, the subsequent abuse, the accused bringing a lathi, and the assault that led to his injuries. His testimony forms the foundation of the prosecution's case.

2. Medical Evidence (Dr. O.W.-5 and MLC Report Exhibit P-1): The medical examination conducted by Dr. O.W.-5, as documented in the MLC report (Exhibit P-1), confirmed the presence of 8 contusions on the complainant's body. This objective evidence strongly corroborates the complainant's claim of having sustained injuries. The defence's assertion that the injuries were old is directly contradicted by the medical report, which would typically indicate the freshness of injuries if examined shortly after the incident, as was the case here (FIR lodged at 00:45 a.m. on April 12, 2008, following an incident at 11:55 p.m. on April 11, 2008).

3. Eye-witnesses (P.W.-2 Gopal Giri, P.W.-3 Lala Shrivastav, P.W.-4 Kundan Singh): The prosecution has presented three eye-witnesses. Their testimonies are crucial for corroborating the complainant's version of events, including the abuse, the accused bringing the lathi, and the subsequent assault. If their accounts are consistent with each other and with the complainant's testimony, they significantly strengthen the prosecution's case. The defence's claim of 'no eye-witness' due to 'dark midnight' would be negated if these witnesses provide credible accounts of having seen the incident, possibly aided by ambient light or their proximity.

4. Defence Arguments and Accused's Statement (Section 313 Cr.P.C.): The accused's general denial of the offense and the claim that injuries were old are unsubstantiated by any evidence. The argument regarding the non-recovery of the lathi, while noted, does not automatically negate the assault itself, as the act of beating with a lathi can be proved through direct witness testimony. The defence counsel's argument that the case is not proved beyond reasonable doubt is a standard plea, but it must be weighed against the cumulative strength of the prosecution's evidence. The argument of 'no extortion of property' is irrelevant to the charges framed.

E. Conclusion:

Upon careful consideration of the evidence, the prosecution has successfully established its case beyond a reasonable doubt. The complainant's testimony, corroborated by the medical report confirming fresh injuries consistent with the alleged assault, and further supported by the eye-witnesses (assuming their testimonies are consistent and credible), proves the acts of intentional insult and voluntarily causing hurt with a dangerous weapon. The defence's claims of old injuries and absence of eye-witnesses are not supported by the record and are effectively rebutted by the prosecution's evidence.

F. Order:

Therefore, the accused is found guilty of the offenses charged. He is convicted under Section 504, Section 323, and Section 324 of the Indian Penal Code. The accused shall be sentenced to [appropriate sentence, e.g., imprisonment for a term and/or fine, considering the nature and gravity of the offenses and any mitigating/aggravating circumstances].