Hexagram 27, Yí (Nourishment): Line 1
颐卦初九 · 山雷颐 · 中文版
初九：舍尔灵龟，观我朵颐，凶。
The line (Legge)
The first NINE, undivided, (seems to be thus addressed), 'You leave your efficacious tortoise, and look at me till your lower jaw hangs down.' There will be evil.
Small Image commentary
'You look at me till your (lower) jaw hangs down:' - (the subject of the line) is thus shown unfit to be thought noble.
象曰：观我朵颐，亦不足贵也。
In plain words
You let go of your magic tortoise and watch me with my jaws working: misfortune. The magic tortoise was said to live on breath alone, a picture of self-sufficiency; the working jaws picture craving. The first line is strong and could nourish itself, yet envies those above and hungers for food. The Small Image says this is not worth honouring.
Applying it to your situation
If you have started to envy what others have, this line suggests first looking at what is already yours. What that lets you stand on your own have you been overlooking?
Position
A solid (yang) line in the first place, which is a yang (odd) place, so it is in its proper place. Its partner is line 4; one is yin and the other yang, so they respond to each other.
If this line moves
With this line moving alone, Yí changes into Hexagram 23 Bō (Splitting Apart). The Jiaoshi Yilin verse for this change (Chinese): 焦氏易林·颐之剥.
The hexagram
Hexagram 27 Yí (Nourishment). The Judgment: Yi indicates that with firm correctness there will be good fortune (in what is denoted by it). We must look at what we are seeking to nourish, and by the exercise of our thoughts seek for the proper aliment.
Next: Line 2
English text: James Legge, The Yi King (Sacred Books of the East, vol. 16, 1882), public domain, as transcribed by the Chinese Text Project. Chinese: the received text. Offered for study and reflection, not as prediction. Plain-English readings and position notes by this site.