Visuddhimagga XIV-49

Sasambhārasotabilassa anto tanutambalomācite aṅgulivedhakasaṇṭhāne padese sotaṃ vuttappakārāhi dhātūhi katūpakāraṃ utucittāhārehi upatthambhiyamānaṃ āyunā anupāliyamānaṃ vaṇṇādīhi parivutaṃ sotaviññāṇādīnaṃ yathārahaṃ vatthudvārabhāvaṃ sādhayamānaṃ tiṭṭhati.

「耳（根）」──在全体的耳腔之内，即在那掩有薄薄的黄毛犹如指套的形状的地方，由前面所说的四界的资助，由时节、心和食的支持，由寿所保护，由色等所随从，它恰好是耳识等处的所依与门。

Ñ(XIV,49): 2. The ear [sensitivity] is to be found inside the [feature of the] ear-hole with its accessories in the place that is shaped like a finger-stall and surrounded by fine brown hairs. It is assisted by the elements in the way aforesaid. It is consolidated by temperature, consciousness, and nutriment; it is maintained by life; it is equipped with colour, etc.; and it duly serves both as physical basis and as door for ear-consciousness, and the rest.