Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
tabarani:12817Aḥmad b. Yaḥyá al-Ḥulwānī > Saʿīd b. Sulaymān > ʿAbbād b. al-ʿAwwām > Sufyān b. Ḥusayn > Yaʿlá b. Muslim > Jābir b. Zayd > Ibn ʿAbbās And Lā Taqūlan Lishayʾ Innī Fāʿil Dhalik Ghad Illā > Yashāʾ Allāh Wādhkur Rabbak Idhā Nasīt

[Machine] "That Allah wills and remember your Lord when you forget, and say, 'If Allah wills."  

الطبراني:١٢٨١٧حَدَّثَنَا أَحْمَدُ بْنُ يَحْيَى الْحُلْوَانِيُّ ثنا سَعِيدُ بْنُ سُلَيْمَانَ عَنْ عَبَّادِ بْنِ الْعَوَّامِّ عَنْ سُفْيَانَ بْنِ حُسَيْنٍ عَنْ يَعْلَى بْنِ مُسْلِمٍ عَنْ جَابِرِ بْنِ زَيْدٍ عَنِ ابْنِ عَبَّاسٍ {§وَلَا تَقُولَنَّ لِشَيْءٍ إِنِّي فَاعِلٌ ذَلِكَ غَدًا إِلَّا

أَنْ يَشَاءَ اللهُ وَاذْكُرْ رَبَّكَ إِذَا نَسِيتَ} أَنْ تَقُولَ إِنْ شَاءَ اللهُ