Bukhari

«الزبر‏» means «الكتب». Its singular is «زبور». « زبرت» means «كتبت‏», I have written. And indeed We gave David a bounty from Us (and We said): O mountains! Glorify (Allah) with him. Mujahid (may Allah have mercy on him) said that the meaning of («اوبي معه») is «سبحي معه». And We commanded the birds to glorify (Allah) with him, and We made iron soft for him so that he could make coats of mail from it. The meaning of «سابغات‏» is «دروع », that is, coats of mail. The meaning of «وقدر في السرد‏» is. And keep a particular method in making (i.e., in making the nails and rings of the coat of mail). Do not make the nails so thin that they become loose, nor so large that the ring breaks, and do good deeds. Indeed, whatever you do, I am watching it.

Narrated Abu Huraira: The Prophet said, "The reciting of the Zabur (i.e. Psalms) was made easy for David. He used to order that his riding animals be saddled, and would finish reciting the Zabur before they were saddled. And he would never eat except from the earnings of his manual work."

These people began to transgress on the Sabbath. «شرعا‏» That is, «شوارع», "floating on the water." Up to the end of the verse «كونوا قردة خاسئين‏».