瑜伽論記 18.228

18.228

泰云：大地已還菩薩，未能廣利眾生故有生無色界者，然於中偏修慧者緣下一切法，偏修定者不緣下法。若廣修慧聲聞通學無學，生無色界者亦緣下地。若下廣修慧者，同凡夫不緣下地也，初地以上菩薩名得自在不生無色。

Tai says: Bodhisattvas below the stages (bhūmi), being not yet able to extensively benefit sentient beings, may thus be born in the formless realm; however, among them, those who predominantly cultivate wisdom take as object all lower phenomena, while those who predominantly cultivate meditative concentration do not take lower phenomena as object. If śrāvakas who extensively cultivate wisdom, encompassing both those with training and those beyond training, are born in the formless realm, they also take lower stages as object. If those below do not extensively cultivate wisdom, they are like ordinary beings and do not take lower stages as object. Bodhisattvas of the first bhūmi and above are called those who have attained mastery; they are not born in the formless realm.