She was with the wives of the Prophet ﷺ while a driver was urging their mounts along, when the Prophet ﷺ said, "Anjashah, go gently when driving the fragile vessels."
أنها كانت مع نساء النبي ﷺ وهن يسوق بهن سواق، فقال النبي ﷺ: أي أنجشة رويدك سوقك بالقوارير.
Ahmad (27116), Nasai in Amal al-Yawm wal-Layla (530), and Tabarani (25/121) all narrated it through the route of Sulayman Taymi, from Anas bin Malik, from Umm Salim, who mentioned it. Its isnad is sahih.Haythami mentioned it in Al-Majma (3/214) and said, "Ahmad and Tabarani narrated it in Al-Kabir, and the men of Ahmad's narration are the men of sahih."