It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that he recited this noble verse: "Indeed, the rising by night is firmer in impression and more correct (aswab) in speech" [Surah al-Muzzammil: 6]. A man said to him: We recite it as "wa aqwamu qila (more upright in speech)". To this he (may Allah be pleased with him) said: "Indeed aqwam, aswab, ahya' and all other words like them have one and the same meaning."
Imam Abu Ya'la al-Mawsili recorded this hadith in his Musnad.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب التفسير / 3769
Hadith Gradingمحدثین:إسناده ضعيف، موقوف
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :إسناده ضعيف موقوف » «أخرجه مسند أبي يعلى برقم: 4022، وأخرجه مسند البزار برقم: 7565»