Musannaf Ibn Abi Shayba 33:465

'Affan ibn Muslim narrated to us, he said: 'Abdullah al-Rumi narrated to us, he said: I entered upon Umm Talq, and she narrated to him that she entered upon Abu Dharr and gave him some flour and parched barley. He placed it in the corner of his garment and said, "Your reward is with Allah." I said to her, "O Umm Talq, how did you see the state of Abu Dharr?" She said, "O my son, I saw him disheveled and pale, and I saw in his hand teased wool and two sticks that he had crossed, and he was spinning from that wool."