按照其跋尾所說，八思巴帝師造《略勝住法儀》這部儀軌乃按“法主薩思迦如何所作”寫成的。查《薩思迦班智達全集》，其中並沒有單獨的“勝住法儀”，然而在他的名著《分辨三律儀》（sDom pa gsum gyi rab tu dbye ba）中，我們讀到了以下關於“勝住法儀”的一個有趣的段落：
如是我聞，或說勝住乃經部傳軌，金剛手亦為經部傳軌，而懺罪經和心經乃密咒傳軌，聽者對此亦當作審察，經中無說勝住者。然則，或曰［作］供、讚、［說］吉祥偈等如國王之授位者即勝住，或可言之。以觀想本尊、念誦密咒和淨瓶、本尊為前行，以勾召、祈請智慧尊入三昧耶尊，以及密咒之加持、拋花善作供養、廣作吉祥等為正行之法儀［為勝住法儀］，此乃密咒續部所說，非般若部中所說也。或雲此乃要門，然則當問此乃根據何等經部所說？今日或有雲觀想密集之本尊乃經部傳軌，說密集等法儀乃出自經部傳軌法儀，豈不怪哉！或曰大象所生小獅崽，則乃從前沒有的動物。諸賢者今後請不要作諸如此類的法儀。或曰為本尊作勝住儀，為人作灌頂等，即使得金剛弟子之灌頂者也不能妄作，更不用說任何灌頂都沒有得到過的補特加羅。隻得到金剛弟子灌頂者，隻有觀想本尊、念誦、作燒施、修習羯磨集，及修習成就、手印和智慧等儀軌，並聽一些密咒的權利，而不可作解釋密續、灌頂、勝住等上師的事業。得金剛上師灌頂者，可觀想即彼本尊輪等清淨中圍，及作灌頂、勝住等上師之事業，諸佛之誓言和無上律儀等乃唯金剛上師可作之事業，而他人不可妄作。今日人謂勝住乃經部傳軌，佛陀不曾如是開示。在家人作師君與非金剛上師者作灌頂與勝住，二者同樣非佛所說。金剛手之念修亦非諸經部所說，彼等於陀羅尼中所說者乃［密續］事部之法儀。佛亦未說懺罪佛執盾牌、劍等法器之修法。經與續之差別即是有無法儀之事。知彼如是，方可談明辨諸經部與續部之傳軌。（de bzhin rab gnas mdo lugs dang/ phyag na rdo rje mdo lugs dang/ ltung bshags dang ni sher snying sogs/ sngags lugs yin zhes'chad pa thos/'di yang brtan par bya bas nyon/ mdo nas rab gnas bshad pa med/'on kyang mchod bstod bkra shis sogs/ rgyal po'i mnga' dbul lta bu la/ rab gnas yin zhes smra na smros/ lha bsgom pa dang sngags bzlas dang/ bum pa lha yi sta gon dang/ dngos gzhi'i dam tshig sems dpa' dang/ ye shes'khor lo dgug gzhug dang/ spyan dbye brtan par bzhugs pa dang/ sngags kyi byin gyis brlabs pa yi/ me tog dor nas legs mchod de/ bkra shis rgyas par byed pa yi/ cho ga gsang sngags rgyud sde las/ gsungs kyi pha rol phyin las min// la la gdams ngag yin zhes smra/'o na mdo sde gang dag la/ brten pa yin pa smra dgos so// deng sang gsang ba'dus pa'i lha/ bsgoms nas mdo lugs yin zhes smra/ gsang'dus la sogs cho ga la/ mdo lugs cho ga'byung ba mtshar// seng ge'i phru gu glang chen las/ byung na sngon med srog chags yin/ mkhas pa rnams kyis'di dra yi/ cho ga slan chad ma byed cig// lha la rab tu gnas pa dang/ mi la dbang bskur bya ba sogs/ rdo rje slob ma'i dbang bskur ba/ thob kyang bya bar ma gsungs na/ dbang bskur gtan nas ma thob pa'i/ gang zag rnams kyis smos ci dgos// rdo rje slob ma'i dbang bskur tsam/ thob nas lha bsgom tsam dang ni/ bzlas brjod dang ni sbyin sreg dang/ las tshogs la sogs bsgrub pa yi/ dngos grub dang ni phyag rgya yi/ ye shes sgrub pa'i cho ga dang/ gsang sngags'ga' zhig nyan pa la/ dbang ba yin gyi rgyud'chad dang/ dbang bskur dang ni rab gnas sogs/ slob dpon phrin las byar mi rung/ rdo rje slob dpon dbang thob nas/'khor lo lha yi de nyid sogs/ rnam dag dkyil'khor bsgom pa dang/ dbang bskur dang ni rab gnas sogs/ slob dpon gyi ni phrin las dang/ sangs rgyas kun gyi dam tshig dang/ bla na med pa'i sdom pa sogs/ rdo rje slob dpon kho na'i las/ nyid yin gzhan gyis byar mi rung/ deng sang rab gnas mdo lugs zhes/'chad pa sangs rgyas bstan pa min/ khyim pas mkhyen slob byed pa dang/ rod rje slob dpon ma yin pas/ dbang bskur rab gnas byed pa ni/ gnyis ka bstan pa min par mtshungs// phyag na rdo rje'i bsgom bzlas kyang/ mdo sden rnams nas bshad pa med/ gzung nas bshad pa de dag ni/ bya ba'i rgyud kyi cho ga yin// ltung bshags sangs rgyas phyag mtshan la/ phub dang ral gri sogs'dzin pa'i/ sgrub thabs sangs rgyas kyis ma gsungs// mdo dang rgyud kyi khyad par ni/ cho ga'i bya ba yod med yin/ de ltar shes nas mdo sde dang/ sngags kyi lugs rnams dpyod de smros//）[36]