Sa
Sa,2 [Idg.*so- (m.),*sā- (f.); Nom.sg.to base *to- of the oblique cases; cp.Sk.sa (saḥ),sā; Av.hō,hā; Gr.o(,h(; Goth.sa,sō; Ags.sē “the” (=that one); pe-s=E.thi-s] base of the Nom.of the demonstr.pron.that,he,she.The form sg.m.sa is rare (e.g.Dh.142; Sn.89).According to Geiger (P.Gr.§ 105) sa occurs in Sn.40 times,but so 124 times.In later Pāli sa is almost extinct.The final o of so is often changed into v before vowels,and a short vowel is lengthened after this v:svājja Sn.998=so ajja; svāhaṁ J.I,167=so ahaṁ; svāyaṁ Vin.I,2=so ayaṁ.The foll.vowel is dropped in so maṁ It.57=so imaṁ.-- A form se is Māgadhism for nt.Acc.sg.taṁ,found e.g.at D.II,278,279; M.II,254,255,and in combn seyyathā,seyyathīdaṁ (for which taṁyathā Miln.1).An idiomatic use is that of so in meaning of “that (he or somebody),” e.g.“so vata ...palipanno paraṁ palipannaṁ uddharissatī ti:n’etaṁ ṭhānaṁ vijjati” M.I,45; cp.“sā ‘haṁ dhammaṁ nâssosiṁ” that I did not hear the Dh.Vv 405.Or in the sense of a cond.(or causal) part.“if,” or “once,” e.g.sa kho so bhikkhu ...upakkileso ti iti viditvā ...upakkilesaṁ pajahati “once he has recognised ...” M.I,37.Cp.ya° II.2 b.On correl.use with ya° (yo so etc.) see ya° II.1.(Page 655)