Pakistan Legal Practitioners and Bar Councils Rules, 1976
Pakistan Legal Practitioners and Bar Councils Rules, 1976 — section 157
157. When an advocate is a witness for his client except as to merely formal matters, such as the attestation or custody of an instrument and the like, he should leave the trial of the case to other advocates. Except when essential to the ends of justice, an advocate should avoid testifying in Court on behalf of his client.
This is the text of the provision as enacted. It is legal information, not legal advice, and it cannot account for the facts of your own matter. For advice on your situation, consult a verified advocate.