‘Abdullāh bin ‘Umar

'Abdullāh bin 'Umar (may Allāh be pleased with them both) said: “Every bid'ah (religious innovation) is misguidance even if people think it is good.”

'Abdullāh bin 'Umar (may Allāh be pleased with them both) said: “In the evening do not expect [to live until] the morning, and in the morning do not expect [to live until] the evening. Take [advantage of] your health before times of sickness, and [take advantage of] your life before your death.”