Crab in a dream: meaning in Ibn Sirin, al-Nabulsi and Ibn Shahin

10 passages from 4 sources, quoted as written, every one linked to its page.

Abd al-Ghani al-Nabulsi, Ta'tir al-Anam fi Ta'bir al-Manam

In a dream it is a man of much guile, on account of his many weapons, of great awesomeness, far-reaching in his grasp, ambition, and persistence, difficult in companionship.

Ta'tir al-Anam fi Ta'bir al-Manam, p. 173

And whoever eats the flesh of a crab will attain good from a distant land.

Ta'tir al-Anam fi Ta'bir al-Manam, p. 173

(And it is said) whoever sees a crab will obtain unlawful wealth.

Ta'tir al-Anam fi Ta'bir al-Manam, p. 173

Ibn Shahin al-Zahiri, al-Isharat fi Ilm al-Ibarat

As for the crab, al-Kirmani said: it is interpreted as a man of great lineage, of far-reaching ambition, of difficult character. And it is said: the crab is interpreted as a man of bad character, of base ambition, spiteful. And it is said: a crooked friend who is not agreeable.

al-Isharat fi Ilm al-Ibarat, p. 220

attributed to Ibn Sirin, Muntakhab al-Kalam fi Tafsir al-Ahlam

(The crab) is a crafty, fearsome man of lofty ambition.

Muntakhab al-Kalam fi Tafsir al-Ahlam, pp. 413–414

And if he sees that he is eating the flesh of a crab, then he will obtain wealth and good from a distant place.

Muntakhab al-Kalam fi Tafsir al-Ahlam, pp. 780–783

And eating its flesh is gaining wealth and good from a distant land.

Muntakhab al-Kalam fi Tafsir al-Ahlam, pp. 413–414

And whoever sees that he has obtained a crab, or owned it, or taken it for himself, then he will obtain or gain the upper hand over a man of the like of it in his character traits and natural dispositions. And the crab is a person hard to grasp in his character, of far-reaching ambition in his affairs, far from turning back from what he is bent upon, difficult in his knowledge.

Muntakhab al-Kalam fi Tafsir al-Ahlam, pp. 780–783

And it is said: whoever sees a crab will obtain unlawful wealth.

Muntakhab al-Kalam fi Tafsir al-Ahlam, pp. 413–414

Freud and Jung, a separate view

but a large crab seizes on the dreamer by the foot and tries to pull her in.

Carl Jung, Psychology of the Unconscious (1916) / Collected Papers (1917), Psychology of the Unconscious, ch. V Symbolism of the Mother and of Rebirth