大方廣圓覺修多羅了義經略疏 2.416

2.416

雖悟即動即靜，為欲對治動亂之習，一向以靜境安心，漸漸修行方得成就。不取於法為取靜也。愨云：「然覺心初建力尚尫微，理宜取靜安詳方能展照。」《論》云：「若修止者，住於靜處，端坐正意，不依氣息、形色、虛空、地水火風、見聞覺知，乃至當知唯心，無外境界。」即復此心無自相等。

Although awakening to motion being stillness itself, in order to counteract the habit of disturbance and confusion, one settles the mind single-mindedly in a quiet realm, gradually practicing so as to attain accomplishment. Not grasping at phenomena is 'adopting stillness.' Que says: 'When the enlightened mind is first established, its strength is still feeble; in principle, one should adopt stillness and composure, and only then can its illuminating power expand.' The Treatise says: 'If one cultivates śamatha, one should abide in a quiet place, sit upright with correct mindfulness, and not rely on breath, form, space, earth, water, fire, wind, seeing, hearing, perceiving, knowing, and so on; one should know that it is only mind, with no external realms,' and furthermore this mind is without own-marks, and so on.