Saṭṭhuṃ at Ja VI 185 (taṃ asakkhi saṭṭhuṃ) is infinitive of sajati 1 (sr̥j = Sanskrit sraṣṭuṃ) to dismiss, let loose. The form has caused trouble, since the commentary explains it with gaṇhituṃ "to take." This has induced Kern ( Toev. sub voce ) to see in it a very old (even pre-Vedic!) form with °sāḍhuṃ as original. Evidently he derives it from sah (Epic Sanskrit soḍhuṃ!), as he translates it as "to master, overpower".
(sajati 的【不】), 要放棄，要解散。
(inf, inf of sajati) to give up, to dismiss Construction: √saj + tuṃ