Travel abroad without court permission

If the court got knowledge about his travel without permission then he is in trouble, his bail can be cancelled or fine will be imposed upon him. If he is still abroad ask him to return. Be careful as if the opposite party would come to know about this event they will certainly inform the court and you will be in trouble.

Just handle the matter now to keep  it secret .

There need not be any problem unless the prosecution makes an issue of it or the accused fails to appear when specifically required by the Court - for instance, for examination under Section 313 CrPC.

Unless the court has ordered you not to travel abroad, you are free to do so. The accused is not prevented from leaving India by the mere filing of the case, even if it is accompanied by a court order of restraint.

But it depends on the terms under which your bail was approved. Your financial choices and geographic movements may be restricted by the bail conditions. Your ability to leave the nation will depend on the type of crime with which you have been charged, the regulations governing bail in your jurisdiction, and the preferences of the judge assigned to your case, regardless of the cause for your intended journey. If your bail is unconditional and there is no order of restraint operating against you, you are free to travel unless there is a condition that prevents you from traveling while the case is pending.