Men breastfeeding men?

Spongebob Abbas Al-Qummī states: “It has been narrated with a reliable report from Al Sadiq عليه السلام he said: ‘When the Prophet of Allāh ﷺ was born, he didn’t recive any milk for a few days, so Abu Talib pulled him to his chest, Allāh ﷻ then sent to him milk (in his chest) for him to feed on for a few days until Abu Talib was able to give him to Halima” [Muntaha Al-‘Amal vol. 1 pg. 52]