What is the ruling on one who recites "Subhana Rabbi al-A'la" in prostration but does not prolong the letter "lam" at the end of the word "al-A'la"?

If the question is about the ruling on prayer in terms of validity and invalidity, then glorification (tasbih) in bowing (ruku') and prostration (sujud) is a sunnah (recommended act) according to the majority of scholars, and the prayer is valid even if it is omitted. Even according to the Hanbalis, who consider it obligatory, the prayer is valid for someone who merely says: "Subhan Rabbi" (Glory be to my Lord). If the question is about sinfulness, then it is not permissible to intentionally omit it. However, if one omits it by mistake, there is no sin upon them, as Allah Almighty says: "And there is no blame upon you for that in which you have erred, but [there is blame for] what your hearts intended."