Musnad Ahmad 1168:2

Sufyan narrated to us, from al-Zuhri, from Ubayd Allah, from Umm Qays bint Mihsan, the sister of Ukashah ibn Mihsan, who said: "I entered upon the Messenger of Allah (ﷺ) with a son of mine who had not yet eaten food, and he urinated, so he (the Prophet) called for water and sprinkled it." And I entered with a son of mine whom I had treated for *al-udrah* (tonsillitis/throat inflammation) by pressing/cauterizing, and he said once: "upon him." He said: "Why do you press/cauterize your children with this *alaq* (treatment)? You should use this *al-qist* (costus)." And Sufyan said once: "The Indian wood (al-ud al-hindi), for in it are seven cures, among them pleurisy. It is administered nasally for *al-udrah* (tonsillitis), and it is administered orally for pleurisy."