A:
What is lawful in regards to offering condolences to a grieving family is to prepare enough food for them, as much as they may need and serve them it. The Messenger of Allah (peace be upon him) said when
Ja`far ibn Abu Talib (may Allah be pleased with him) was martyred:
Prepare some food for
the family of Ja`far for what has befallen them is keeping them preoccupied.
As for installing tents, preparing much food and assembling by the house of the grieving family, this contradicts the Sunnah (actions following the example of the Prophet). Jarir Ibn `Abdullah Al-Bajaly (may Allah be pleased with him) said: "We used to count gathering with the family of the deceased and making food for them after the burial to be a kind of wailing."May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.