行专一(xíng zhuān yī) “concentrates (one’s mind)”
not found at HD. 3.909.; not found at DK. 10.144.; Zhu 138f.;
116c3.欲比无等伦 亿千劫禅定 加复八千亿 而行专一心(v)
K. 335.7.samāhita~; L. 45a20.安住心不乱;