Al-Kāfi, vol. 4, no. 845

5. A number of our people have narrated from Ahmad ibn Muhammad from abu ‘Abd Allah al-Barqiy from certain persons of our people who has said the following: “Once, a woman gave to me a certain amount of yarn as gift to al-Ka‘bah to be used in stitching its covering. I disliked giving it to the caretakers because I knew them. When I arrived in al-Madinah I went to visit abu Ja‘far (a.s.). I said to him, ‘I pray to Allah to keep my soul in service for your cause, a woman gave to me a certain amount of yarn as gift to al-Ka‘bah to be used in stitching its covering and I disliked giving it to the caretakers.’ He (the Imam) said, ‘Buy with it saffron and honey, then take a little of the soil from the grave of abu ‘Abd Allah, al-Husayn (a.s.). Mix it with water from the sky, a certain amount of honey and saffron; then distribute it among the Shi`a so they can use it as curing medicine for their patients.’”