Comments

Comm. NT: 2. “Cittass’ ekaggatā” is rendered here as “unification of mind” in the sense of agreement or harmony (cf. samagga) of consciousness and its concomitants in focusing on a single object (see A I 70). It is sometimes rendered “one-pointedness” in that sense, or in the sense of the focusing of a searchlight. It may be concluded that this term is simply a synonym for samādhi and nothing more, firstly from its use in the suttas, and secondly from the fact that it is given no separate definition in the description of the formations aggregate in Ch. XIV. Cf. gloss at M-a I 124.

пали	Taṃ sabbaṃ vibhāvayituṃ ārabbhamānaṃ vissajjanaṃ adhippetañceva atthaṃ na sādheyya, uttari ca vikkhepāya saṃvatteyya, tasmā idhādhippetameva sandhāya vadāma, kusalacittekaggatā samādhi.
Nyanamoli thera	An answer that attempted to cover it all would accomplish neither its intention nor its purpose and would, besides, lead to distraction; so we shall confine ourselves to the kind intended here, calling concentration profitable unification of mind.2