The problem with haste. When speed is not of the essence.
Sahl bin Sa’d As-Saidi narrated that the Messenger of Allah said: عن سَهْلِ بْنِ سَعْدٍ السَّاعِدِيِّ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم “ الأَنَاةُ مِنَ اللَّهِ وَالْعَجَلَةُ مِنَ الشَّيْطَانِ ” Deliberation is from Allah, and haste/recklessness is from Satan.” [Tirmidhi] Anas bin Malik (may Allah be pleased with him) said that the…