The Peak of Eloquence · Hadith 2254 (#Passage #613)

قال السيد الرضي: لأن التكليف مستلزمٌ للمشقة، وهو شرٌ لازمٌ عن الأخ المتَكلّفِ له، فهو شرُّ الإخوان.

as-Sayyid ar-Raḍī says: This is because formality is inseparable from hardship and it is an evil that is caused by a comrade for whom formality is observed. Consequently, he is the worst of all comrades.

Gradings are classical jarḥ-wa-taʿdīl, name-matched to a rijāl index (not individually re-verified).