مَحْسَمَةٌ

A cause, or means, of cutting off, or stopping; (T, K, TA;) synonym مَقْطَعَةٌ. (T, TA.) So in the saying, هٰذَا مَحْسَمَةٌ لِلدَّاءِ This is a cause, or means, of cutting off, or stopping, the disease. (K, * TA.) And hence, (TA,) عَلَيْكُمْ بِالصَّوْمِ فَإِنَّهُ مَحْسَمَةٌ لِلْعِرْقِ وَ مَذْهَبَةٌ لِلْأَشَرِ, a tradition, (T, S, TA,) meaning [Keep ye to fasting, for it is] a cause, or means, of stopping venereal intercourse, [and a cause, or means, of dispelling exultation, or excessive exultation, and resting the mind upon things agreeable with natural desire:] (TA:) or an impediment to venery, and a cause of diminishing the seminal fluid, and of stopping venereal intercourse or passion, &c. (T, TA.)