﴿ فَإِنْ خِفْتُمْ فَرِجَالًا أَوْ رُكْبَانًۭا ۖ فَإِذَآ أَمِنتُمْ فَٱذْكُرُوا۟ ٱللَّهَ كَمَا عَلَّمَكُم مَّا لَمْ تَكُونُوا۟ تَعْلَمُونَ ﴾

“But if you are in danger, [pray] walking or riding; and when you are again secure, bear God in mind - since it is He who taught you what you did not previously know.”

And if you are in fear of an enemy or a torrent or a predatory animal then standing rijāl plural of rājil praying while walking or mounted rukbān plural of rākib. In other words in whichever way you can facing the direction of the qibla or otherwise making the gestures of genuflexion and prostration; but when you are secure from any fear then remember God by performing prayer as He taught you what you knew not before He taught you its obligations and its proper ways the particle kāf of ka-mā ‘as’ has the same meaning as mithl ‘like’ while the mā is related to the verbal action or is relative.