Is it permissible for him to pray the obligatory prayer in the litter?

Is it permissible for him to pray the obligatory prayer in the litter? He said: Yes, it is like a ship. If he is able standing, otherwise sitting. Whatever is from that, Allah is more worthy of excuse. Allah, the Mighty and Sublime, says: But! The human being is a witness against himself [75:14] “ [16] .