Nahj al-Balāgha
Hadith 1958۴۰۲. وَقَالَ (عليه السلام) لِبَعْضِ مُخَاطِبِيهِ، وَقَدْ تَكَلَّمَ بِكَلِمَةٍ يُسْتَصْغَرُ مِثْلُهُ عَنْ قَوْلِ مِثْلِهَا: لَقَدْ طِرْتَ شَكِيراً، وَهَدَرْتَ سَقْباً.
402. Someone uttered an expression above his position, then Amīr al-mu’minīn, peace be upon him, said to him: You have started flying soon after growing feathers (shakīr) and commenced grumbling before attaining youth (saqb).