Muditābrahmavihārassa ‘‘cakkhuviññeyyānaṃ rūpānaṃ iṭṭhānaṃ…pe… lokāmisapaṭisaṃyuttānaṃ paṭilābhaṃ vā paṭilābhato samanupassato pubbe vā paṭiladdhapubbaṃ atītaṃ niruddhaṃ vipariṇataṃ samanussarato uppajjati somanassaṃ, yaṃ evarūpaṃ somanassaṃ, idaṃ vuccati gehasitaṃ somanassa’’ntiādinā (ma. ni. 3.306) nayena āgataṃ gehasitaṃ somanassaṃ sampattidassanasabhāgatāya āsannapaccatthikaṃ, sabhāgavisabhāgatāya arati dūrapaccatthikā.
Ñ(IX,100): Gladness has joy based on the home life as its near enemy, since both share in seeing success. Such joy has been described in the way beginning, 'When a man either regards as gain the obtaining of visible objects cognizable by the eye that are sought … and associated with worldliness, or recalls those formerly obtained that are past, ceased, and changed, then joy arises in him. Such joy as this is called joy based on the home life' (M.iii,217). And aversion (boredom), which is dissimilar to the similar joy, is its far enemy.
Ñ: So gladness should be practised free from fear of that; for it is not possible to practise gladness and be discontented with remote abodes and things connected with the higher profitableness simultaneously.