Chasidut for Bava Kamma 184:9
א"ל את אמרת מהתם ואנא אמינא מהכא (בראשית כד, סז) ויבאה יצחק האהלה שרה אמו ויקח את רבקה ותהי לו לאשה ויאהבה וינחם יצחק אחרי אמו וכתיב בתריה (בראשית כה, א) ויוסף אברהם ויקח אשה ושמה קטורה
Raba [again] said to Rabbah b. Mari: Whence can be derived the popular saying: 'If there is any matter of reproach in thee be the first to tell it?' — He replied: As it was written: And he said, I am Abraham's servant.<span class="x" onmousemove="('comment',' Ibid. XXIV, 34. ');"><sup>14</sup></span> Raba again said to Rabbah b. Mari: Whence can be derived the popular saying: 'Though a duck keeps its head down while walking its eyes look afar'? — He replied: As it is written: <i>And when the Lord shall have dealt well with my lord then remember thy handmaid</i>.<span class="x" onmousemove="('comment',' 1 Sam. XXV, 31. Spoken by Abigail to David and hinting thus that she would wish to become his wife in future days. ');"><sup>15</sup></span>
Kedushat Levi
The Talmud Baba Kamma 92 phrases it as a negative virtue when it warns us not to throw a stone into a well from which we had first drunk water.
The “fortune” that the Creator has given to each one of us for free, is our body and its organs as well as the intellectual faculties which serve us well during our life on earth. Is it conceivable that we should be so lacking in gratitude as to refuse to carry out the minimal demands made upon us by our Creator?
If anyone of us does not fulfill G’d’s commandments is G’d not entitled to become very angry at such a person? All we have to do to realize how unjustifiable such a conduct is, is the fact that we ourselves consider anyone not showing gratitude to a fellow human being who had gratuitously endowed us with material wealth as below contempt. What Hillel told the heathen who wished to convert is nothing else than that in Judaism we consider an ingrate as having committed the cardinal sin. The word מעלה in Rabbi Yehudah’s statement can also be translated as “virtue,” i.e. consider in your relationship with G’d that you have demonstrated on earth that you know how to practice gratitude. Surely, the gratitude you owe your Creator cannot be less than what you owe your peers on earth? Rabbi Yehudah implies that virtues we practice daily in our dealings with fellow human beings, must certainly also be practiced in our dealings with G’d.