It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Every honorable speech or action that is not begun with the remembrance of Allah is incomplete and deficient.
Hadith Referenceالفتح الربانی / كتاب الأذكار والدعوات / 5397
Hadith Gradingمحدثین:ضعیف
Hadith Takhrij«اسناده ضعيف لضعف قرة بن عبد الرحمن، وللاضطراب الذي وقع في اسناده وفي متنه، أخرجه ابوداود: 4840، وابن ماجه: 1894، (انظر مسند أحمد ترقيم الرسالة: 8712 ترقیم بيت الأفكار الدولية: 8697»
Brief Explanation
Benefits: … From several ahadith, it is established to recite and write "Bismillah" or "Bismillah al-Rahman al-Rahim" before various matters. Therefore, one should make it a practice to recite "Bismillah" at the beginning of every task and to write "Bismillah al-Rahman al-Rahim" before every good writing.