Sayyidah Umm Jundub (may Allah be pleased with her) narrates: I saw the Messenger of Allah (peace and blessings be upon him) stone Jamrat al-Aqabah from the bottom of the valley on the Day of Sacrifice while he (peace and blessings be upon him) was on a mount; then he departed. Then a woman from the tribe of Khath'am followed him (peace and blessings be upon him), and with her was a child of hers who was afflicted with an ailment. She said: "O Messenger of Allah, this is my son and all that remains of my family, and he has an ailment such that he cannot speak." The Messenger of Allah (peace and blessings be upon him) said: "Bring me a little water." He (peace and blessings be upon him) washed his hands and rinsed his mouth, then gave that water to her and said: "Give him some of this water to drink and pour some of it over him, and ask Allah to cure him." Umm Jundub said: Then I met that woman and said: "I wish you had given me some of it too." She said: "It is only for this afflicted one." She said: Then I met the woman the following year and asked her about the boy. She said: "He was cured, and he was granted an understanding unlike that of ordinary people."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21849