Musnad Ahmad 1156:248

Waki’ narrated to us, Yazid bin Abdullah, the freed slave of As-Sahba’, narrated to us, from Shahr—meaning Ibn Hawshab—from Umm Salamah, from the Prophet, peace and blessings of Allah be upon him, regarding the verse: {And they will not disobey you in what is right} [Al-Mumtahanah: 12]. He said: "It is wailing."