Busaira, who was one of the women emigrants, told of God’s messenger saying to them, “Apply yourselves to glorifying God, saying there is no god but He, and declaring His holiness; and count them on your fingers, for they [i.e. the fingers] will be questioned and asked to speak; and do not be negligent and so be deprived of mercy.”
Tirmidhi and Abu Dawud transmitted it.