신명기 7:11의 Halakhah

And likewise included in this commandment is not to do the commandments of God, blessed be He, by way of testing, such that a person do a commandment to test whether God, may He be blessed, will reward him in His righteousness; and not from his love of God and his fear of Him. And let it not be difficult to you that which they, may their memory be blessed, said in the first chapter of Tractate Taanit 9a, "'A tithe shall you tithe (te'aser)' (Deuteronomy 14:22)? Take a tithe (asser) so that you will become wealthy (titasher)." As they have already answered it there and said that in all the commandments is it stated, "Do not test," except in this [one] of tithes, as it is stated (Malachi 3:10), "Bring the whole tithe into the storeroom,[...] and test Me now by this, etc." And the reason for this is like the matter that is written (Proverbs 19:17), "He is lending to God, he who is gracious to the poor" - meaning to say that God, may He be blessed, has informed us that it is through our financing the servants of His house with tithes that purpose and blessing is found in our money, no matter what, and [that] no matter of sin or iniquity will impinge on it. And the reason for the prohibition of testing about the commandments is because the reward for the commandments is not in this world; and as they expounded in Tractate Avodah Zarah 3a, "Today is the day to do them, but tomorrow" - meaning the world to come - "is [the day] to take their reward." And [about] that which they, may their memory be blessed said (Bava Batra 10b), "One who says, 'This coin is for charity in order that my son should live,' behold, he is completely righteous" - the wise commentators have answered [that it is when he decides in his heart to give it whether [his son] lives or does not live, as this is not testing God.