some natural axioms(?) of living

• Don’t lie (22:30)
• Don’t spy (49:12)
• Don’t insult (49:11)
• Don’t waste (17:26)
• Feed the poor (22:36)
• Don’t backbite (49:12)
• Keep your oaths (5:89)
• Don’t take bribes (27:36)
• Honour your treaties (9:4)
• Restrain your anger (3:134)
• Don’t spread gossip (24:15)
• Think good of others (24:12)
• Be good to guests (51:24-27)
• Don’t harm believers (33:58)
• Don’t be rude to parents (17:23)
• Turn away from ill speech (23:3)
• Don’t make fun of others (49:11)
• Walk in a humble manner (25:63)
• Respond to evil with good (41:34)
• Keep your trusts & promises (23:8)
• Don’t insult others’ false gods (6:108)
• Don’t ask unnecessary questions (5:101)
• Don’t call others with bad names (49:11)
• Don’t claim yourselves to be pure (53:32)
• Speak nicely, even to the ignorant (25:63)
• Don’t ask for repayment for favours (76:9)
• If enemy wants peace, then accept it (8:61)
• Return a greeting in a better manner (4:86)
• Don’t remind others of your favours (2:264)
• Make peace between fighting groups (49:9)
• Lower your voice and talk moderately (31:19)
• Don’t ask too many favours from people (2:273)
• Speak gently, even to leaders of disbelief (20:44)
• Don’t criticize small contributions of others (9:79)
• Try to make peace between husband & wife (4:128)
• Oppression/corruption is worse than killing (2:217)
• Preach to others in a good and wise manner (16:125)
• Don’t accuse others of immorality without proof (24:4)
• Don’t call someone disbeliever without knowing (4:94)
• Know your enemies can become your close friends (41:34)
• Don’t wrongly consume the wealth of the vulnerable (4:29)
• Forgive others, as you would like Allah to forgive you (24:22)
• If unable to help a needy person, at least speak nice words (17:28)
• Verify information from a dubious source before acting upon it (49:6)
• Those who can should continue to spend on those less fortunate (24:22)
• Don’t sit with those who mock religion until they change the subject (4:140)
• The worldly life is nothing but an illusionary enjoyment (3:185)

I actually found this in a youtube comment to this very informative lecture. I checked the validity of some of the references, but I will update this post insha’Allah when I fully check.