Translation of the verse 239 from Surah Al-Baqarah : Number of verses 286 - - page 39 - Part 2.
And if you fear (an enemy), perfrom Salat (pray) on foot or riding. And when you are in safety, offer the Salat (prayer) in the manner He has taught you, which you knew not (before).
And if you fear [an enemy, then pray] on foot or riding. But when you are secure, then remember Allah [in prayer], as He has taught you that which you did not [previously] know.
(2:239) Even if you are in danger, you must offer your Prayers anyhow on foot or on horseback. And when you have peace again, remember Allah in the manner He has taught you , which you did not know before.