Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Ibn Abbas (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) permitted the cutting of idhkhir grass.

Hazrat Mujahid says that there is no harm in picking up or cutting the trees of the Haram that fall down by themselves.

Hazrat Ata and Hazrat Aswad say that there is no harm in cutting down the trees of the Haram that fall down by themselves.