Al-Matalib al-'Aliyah 2754 — Love and brotherhood

It is narrated from Imam al-Hasan al-Basri (may Allah have mercy on him) that he said: "Whenever a Muslim increases his bond of religious brotherhood and Islamic fraternity for the pleasure and good will of Allah Almighty, Allah, the Lord of Might, raises his ranks of faith and his stations in the Hereafter by virtue of this deed."
[Takhrij: This narration is a saying (athar) of Imam al-Hasan al-Basri (may Allah have mercy on him), which Mu'tamir bin Sulayman transmitted through Humayd al-Tawil, and its chain is sahih (authentic)].