benefits others encompasses both meanings: prayer and charity. Do you not see that the funeral prayer is both prayer and charity?

The same applies to every supplication and request for forgiveness on another’s behalf. Moreover, supplicating for another is also supplicating for oneself, as the Prophet (may Allah bless him and grant him peace) said in an authentic hadith:

“No man offers a supplication for his brother in his absence without Allah appointing an angel for him. Whenever he supplicates for his brother, the angel appointed for him says, ‘Amen, and may you have the same.’”