Seven precepts did Rabbi Akiva give to his son Rabbi Yehoshua:--(1.) My
son, teach not in the highest place of the city; (2.) Dwell not in a
city where the leading men are disciples of the wise; (3.) Enter not
suddenly into thine own house, and of course not into thy neighbor's;
(4.) Do not go about without shoes; (5.) Rise early and eat in summer
time because of the heat, and in winter time because of the cold; (6.)
Make thy Sabbath as a week-day rather than depend for support on other
people; (7.) Strive to keep on close friendly terms with the man whom
fortune favors (lit. on whom the present hour smiles). Rav Pappa adds,
"This does not refer to buying or selling, but to partnership."
THE TALMUD, _P'sachim_, fol. 112, col. 1.