四分律行事鈔資持記 3.180

3.180

三中。住日若等，即二處受；以是難緣，不成破故。據此，時現前施，亦應得受。

In the third: if the days of stay are equal, one receives in both places; because this is due to an adverse condition, it does not constitute a disruption [of the retreat]. According to this, one should also be able to receive a timely gift given to those present.