Visuddhimagga III-20

Dutiyacatukke atthi samādhi paritto parittārammaṇo, atthi paritto appamāṇārammaṇo, atthi appamāṇo parittārammaṇo, atthi appamāṇo appamāṇārammaṇoti.

（2）（小小所缘、小无量所缘、无量小所缘、无量无量所缘）于第二种四法中：即为定的小小所缘，小无量所缘，无量小所缘及无量无量所缘。

Ñ(III,20): 11. In the second tetrad there is limited concentration with a limited object, there is limited with a measureless object, there is measureless with a limited object, and there is measureless with a measureless object.

Tattha yo samādhi appaguṇo uparijhānassa paccayo bhavituṃ na sakkoti, ayaṃ paritto.

此中对于那定不熟习，而不能为到达上禅之缘者，这是 [PTS 088]「小定」，

Ñ: Herein, concentration that is unfamiliar and incapable of being a condition for a higher jhāna [88] is limited.

Chew: The unfamiliarity of any of the 40 meditation subjects is called limited. And some of the 40 meditation subjects, which cannot be developed to a higher Jhāna (e.g. Buddhānussati only up to upacārabhāvanā), also are called limited. Am I right?

Yo pana avaḍḍhite ārammaṇe pavatto, ayaṃ parittārammaṇo.

若于所缘没有什么增长而起的（定），这是「小所缘」（定）。

Ñ: When it occurs with an unextended object (Ch. IV, §126), it is with a limited object.

Chew: As Ñ(III,109) “only the ten kasiṇas among these forty meditation subjects need be extended.” So, the object for the remaining meditation subjects are called unextended object. Am I right? Han: Mahāsī Sayādaw did not give such explanation, but I study the text carefully, and I agree with your comments.

Yo paguṇo subhāvito, uparijhānassa paccayo bhavituṃ sakkoti, ayaṃ appamāṇo.

如果那定是善加修习而能为修上禅之缘的，这是「无量」（定）。

Ñ: When it is familiar, well developed, and capable of being a condition for a higher jhāna, it is measureless.

Yo ca vaḍḍhite ārammaṇe pavatto, ayaṃ appamāṇārammaṇo.

若于所缘有增长而起的（定），这是「无量所缘」（定）。

Ñ: And when it occurs with an extended object, it is with a measureless object.

Vuttalakkhaṇavomissatāya pana vomissakanayo veditabbo.

次依上述之相而加以配合，当知为混合定的解释法（小无量所缘及无量无量所缘）。

Ñ: The mixed method can be understood as the mixture of the characteristics already stated.

Evaṃ parittaparittārammaṇādivasena catubbidho.

如是依小小所缘等为四种。

Ñ: So it is of four kinds as limited with limited object, and so on.