سارّهُ
1.
, verbal noun مُسَارَّةٌ and سِرَارٌ, (S, M,) [He spoke, or discoursed, secretly to him or with him;] he acquainted him with a secret. (M.) You say, سارّهُ فِى أُذُنِهِ
He spoke secretly to him in his ear. (S, * K, * TK.) And كَانَ يُحَدِّثُهُ كَأَخِى السِّرَارِ occurs in a tradition, meaning He (Mohammad) used to talk to him ('Omar) in a low voice, like him who is telling a secret. (TA.)
2.
بَيْعُ السِّرَارِ is The selling in which one says, “ I will put forth my hand and thou shalt put forth thy hand, and if I produce my signet-ring before thee, it is a sale for such a price; and if thou produce thy signet-ring before me, for such a price: ” if they produce together, or do not both produce, they do thus again. (Mgh.)